Matthieu Bouat

Articles

Courtesy: Portescap
Motors and Drives January 26, 2022

Understanding the effect of PWM when controlling a brushless dc motor

Motion system designers can be challenged when selecting or developing electronics using pulse-width modulation (PWM) to drive brushless dc motors. Heed some basic physical phenomena to avoid unexpected performance issues, along with general guidelines for using a PWM driver with a brushless DC motor. See diagrams, equations.

By Matthieu Bouat